Charlton: landline numbers and carriers
Charlton is one of the town-level numbering areas the ACMA register uses under area code 03 (VIC & TAS). The register lists 32 number blocks for it with about 26,000 allocated numbers, held by 19 carriers. A landline that calls you from one of these blocks was issued for the Charlton area — though the line may since have been ported, and caller ID can be spoofed.
Source: ACMA register, data as of 31/08/2026
The carriers in Charlton
TELSTRA LIMITED holds the largest share here with 42.3% of allocated numbers — with 18 other carriers alongside. The register names the range holder; individual numbers may operate on another network after porting.
| Carrier | Blocks | Numbers | Share |
|---|---|---|---|
| TELSTRA LIMITED | 2 | 11,000 | 42.3% |
| SYMBIO NETWORKS PTY LTD | 7 | 4,500 | 17.3% |
| OPTUS NETWORKS PTY LIMITED | 3 | 3,000 | 11.5% |
| OPTUS MOBILE PTY LIMITED | 1 | 2,000 | 7.7% |
| PIPE NETWORKS PTY LIMITED | 2 | 1,100 | 4.2% |
| PRIMUS TELECOMMUNICATIONS PTY LIMITED | 2 | 1,100 | 4.2% |
| SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED | 2 | 1,100 | 4.2% |
| CHIME COMMUNICATIONS PTY LTD | 1 | 1,000 | 3.8% |
| NETSIP PTY LTD | 2 | 200 | 0.8% |
| ADARGA PTY LTD | 1 | 100 | 0.4% |
| AGILE PTY LTD | 1 | 100 | 0.4% |
| C2A INTERNET.COM.AU PTY. LTD. | 1 | 100 | 0.4% |
| CHECK TECHNOLOGY GROUP PTY LTD | 1 | 100 | 0.4% |
| LMGPS LTD | 1 | 100 | 0.4% |
| NETERA PTY LTD | 1 | 100 | 0.4% |
Number blocks registered for Charlton
The ACMA allocates geographic numbers in blocks tied to this numbering area. Every registered block for this area is allocated to a carrier.
| Block start | Numbers | Held by |
|---|---|---|
| 0344120200… | 100 | VIRTUTEL PTY LTD |
| 0344169500… | 100 | SOUL PATTINSON TELECOMMUNICATIONS PTY LIMITED |
| 0344178800… | 100 | NETSIP PTY LTD |
| 0344189400… | 100 | THE TRUSTEE FOR READING FAMILY TRUST |
| 0344198500… | 100 | ADARGA PTY LTD |
| 0344209700… | 100 | SYMBIO NETWORKS PTY LTD |
| 0344211000… | 100 | WHY PAY MORE 4 LESS PTY LTD |
| 0344231000… | 3,000 | SYMBIO NETWORKS PTY LTD |
| 0344289300… | 100 | NETSIP PTY LTD |
| 0344301600… | 100 | CHECK TECHNOLOGY GROUP PTY LTD |
| 0344302000… | 1,000 | SYMBIO NETWORKS PTY LTD |
| 0344320000… | 1,000 | OPTUS NETWORKS PTY LIMITED |
| 0344360000… | 1,000 | OPTUS NETWORKS PTY LIMITED |
| 0344383000… | 1,000 | PIPE NETWORKS PTY LIMITED |
| 0344407900… | 100 | C2A INTERNET.COM.AU PTY. LTD. |
| 0344421100… | 100 | LMGPS LTD |
| 0344445400… | 100 | PIVOTEL SATELLITE PTY LIMITED |
| 0344462900… | 100 | NETERA PTY LTD |
Excerpt: the 18 lowest of 32 allocated blocks (source: ACMA register).
Check a number from Charlton
Worth knowing
- Block data tells you where a line was issued, not who is calling — and scammers routinely spoof local landline numbers to make a call look nearby.
- Learn more: the Australian area codes guide and how caller ID spoofing works.